CN101815195A

CN101815195A - Audio and video switching method and system and switcher used by same

Info

Publication number: CN101815195A
Application number: CN201010107029A
Authority: CN
Inventors: 许耿铭
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-02-03
Filing date: 2010-02-03
Publication date: 2010-08-25

Abstract

The invention relates to an audio and video switching method, a system and a switcher used by the same, wherein the switcher comprises a central control circuit, a signal detection circuit and an audio and video switching circuit, the system also comprises a signal source device and an audio and video output device, and the method comprises the following steps: defining and recording the type of signal source equipment connected with each port through user setting; available signal source equipment with signal input is detected and identified through each port signal; and displaying a signal source equipment menu on a screen according to the recording and the detection, and switching signal sources according to the selection of a user. The method, the system and the switcher used by the method adopt a screen menu type adjustment mode, can clearly see the available signal source equipment of the switcher, replace simple audio and video channels or channel numbers, do not need a user to memorize or check the connection line, and are greatly convenient for the user.

Description

The switch of a kind of audio-video switching method, system and use thereof

Technical field

The present invention relates to family, audio-visual education programme, the conversion of the analog-and digital-audio-video signal of public place and switching are specifically related to the switch of a kind of audio-video switching method, system and use thereof.

Background technology

Traditional audiovideo switcher can only be chosen the program that will watch by the button on remote controller or the switch by channel or channel number, the signal of each input port there is not stateless, channel signal source device type flows to TV and shows, the user can't know that in TV or other display terminal audiovideo switcher has connected several signal source equipments, also can't know whether the start shooting work and signal output is arranged of each signal source equipment, do not know that more the signal source equipment that is connect is DVD, game machine, or set-top box, the user is after connecting, can only or go to check that line just can know the signal source equipment type of connection by memory, after many signal source equipments were connected on the video switcher simultaneously, the user used and has above-mentioned all inconveniences.

Summary of the invention

The technical issues that need to address of the present invention are, how the switch of a kind of audio-video switching method, system and use thereof is provided, can how to give television set and show allow the user watch each road input port of audiovideo switcher whether signal is arranged on TV the signal condition of each road input port; How the device type of each road input signal source device is set by the user, and the user can select corresponding signal source equipment icon according to the signal source equipment of reality, and after connecing signal source equipment changed, the user can change the signal source equipment icon thereupon.

First technical problem of the present invention solves like this: make up a kind of audio-video switching method, adopt visual on-screen menu, specifically comprise:

1.1) by the user definition each port connection signal source equipment type and record are set;

1.2) detect the available signal source device that identification has the signal input by each port signal;

1.3) according to described record with detect on screen the display source signal device menus and signal source is carried out in its selection and switch according to the user.

According to audio-video switching method provided by the invention, described signal source equipment menu includes, but are not limited to following dual mode:

(1) described signal source equipment menu comprises that each port connects signal source equipment icon and is used for the sign of identification source device signal state; The sign of described signal source equipment signal condition comprises color or literal, includes, but are not limited to use green expression available, and grey colour specification does not have the signal input.

(2) port that shows in the described signal source equipment menu connects signal source equipment and only comprises available signal source device icon, and not showing does not have the port of signal input to connect signal source equipment.

According to audio-video switching method provided by the invention, also comprise when increase or replacing port connect signal source equipment, redefine corresponding port connection signal source equipment type and also write down or renewal.

According to audio-video switching method provided by the invention, described record includes, but are not limited to the device numbering in following form signal source equipment type coding+the type, when this signal source equipment type has only one, can not have device numbering.

According to audio-video switching method provided by the invention, a plurality of device type icons that prestore are corresponding with device numbering in described device type coding or signal source equipment type coding+the type.

According to audio-video switching method provided by the invention, described signal is analog audio-video signal or digital audio-video signal.

Second technical problem of the present invention solves like this: make up a kind of audio frequency and video switched system, comprising:

Signal source equipment is used to export audio-video signal;

Audiovideo switcher, be connected between signal source equipment and the audio frequency and video output device, comprise that definable record input port connects the audio frequency and video commutation circuit that detects the signal deteching circuit of input port signal and be used to accept carry out the on-screen menu switching command of being used to of the central control circuit of signal source equipment type, the output of band video and connection thereof, described input port is more than one, is connected one by one with described signal source equipment;

The audio frequency and video output device is used for according to described record and detection signal source output device menus.

According to audio frequency and video switched system provided by the invention, described signal source equipment is more than one, and quantity is less than described input port number, and special circumstances can be one.

According to audio frequency and video switched system provided by the invention, described audiovideo switcher and audio frequency and video output device can be integrated in the equipment.

The 3rd technical problem of the present invention solves like this: make up a kind of audiovideo switcher, be connected between signal source equipment and the audio frequency and video output device, comprise that definable record port connects the signal deteching circuit that is used for the detection port signal of the central control circuit of signal source equipment type, the output of band video and connection thereof and is used to accept to carry out the audio frequency and video commutation circuit of on-screen menu switching command, described port is more than one, is connected one by one with described signal source equipment.

According to audiovideo switcher provided by the invention, described signal source equipment is more than one, and quantity is less than and equals described input port number, and special circumstances can be one.

According to audiovideo switcher provided by the invention, described port be the simulation and or digital port, this switch also comprises the signaling conversion circuit between part or all of port and the output, described output is connected with described audio frequency and video output device.

According to audiovideo switcher provided by the invention, described port comprises audio frequency and video (AV) port, described output is HDMI (High Definition Multimedia Interface) (HDMI) output interface, described signaling conversion circuit comprises AD conversion unit and the HDM I encoder that is connected in turn between described AV port and the HDMI output interface, and described AD conversion unit comprises audio frequency analog to digital converter and video A/D converter in parallel.

According to audiovideo switcher provided by the invention, described central control circuit comprises central processing unit (CPU) and built-in/external memory thereof.

According to audiovideo switcher provided by the invention, also comprise the USB interface that is connected with described CPU.

Audio-video switching method provided by the invention, the switch of system and use thereof, adopt the screen menu type regulative mode, can connect according to reality by the user in advance each port signal source device type is set, can select nearly 14 kinds of signal source equipment types, further detect and display port signal source equipment and signal condition replacement port thereof: when signal, the signal source equipment icon display green of this road port correspondence, during no signal, the signal source equipment icon display grey of this road port correspondence, allow the user can know the available signal source device of seeing switch on TV, need not remember or check and be very easy to the user by line.

Description of drawings

Further the present invention is described in detail below in conjunction with the drawings and specific embodiments.

Fig. 1 is the connection diagram of audio frequency and video switched system specific embodiment of the present invention;

Fig. 2 is audiovideo switcher circuit theory diagrams in the system shown in Figure 1;

Fig. 3 is the audio frequency and video switching flow schematic diagram that system shown in Figure 1 is used.

Embodiment

At first, key of the present invention is described:

(1) signal source equipment type icon change

Realize that by software the device type icon that prestores and contain all signal source equipments basically enters and the interface is set makes amendment.

(2) input signal source device signal state shows

By signal deteching circuit sensed signal sources port signal, and export to display unit by the central processing unit (CPU) that has vision signal output.

Secondly, describe in conjunction with specific embodiments:

As shown in Figure 1, this audio frequency and video switched system specific embodiment adopts nine to advance an audiovideo switcher that outes, and comprises that specifically signal source equipment 1, nine advances an audiovideo switcher that outes, liquid crystal display (LCD) TV.Wherein, nine advance an audiovideo switcher that outes, and its circuit comprises CPU, signal deteching circuit, signaling conversion circuit and input/outbound port as shown in Figure 2.Wherein have 9 groups of external input ports in the input/outbound port, can connect 9 signal sources, input port AV1, AV2, AV3, AV4, H1, H2, H3, H4, USB, wherein, AV1, AV2, AV3, this 4 road input port of AV4 are analog audio-video (AV) input interface, H1, H2, H3, H4 is the HDMI digital audio/video interface, and USB (USB) interface can connect USB storage, and output port has only one tunnel HDMI (High Definition Multimedia Interface) (HDMI) digital audio/video interface.

This nine advance an audiovideo switcher job that outes after, can output image menu give the LCD TV, specifically:

When audiovideo switcher detects certain road input port in signal when input, arranged, can be corresponding port signal source icon display green, 5 road input signals (they are all started shooting) are arranged among Fig. 1 as can be seen, be respectively digital video CD player (DVD), video tape recorder, game machine, set-top box and USB device, remaining port icon is a grey, represent that this road input port does not have the signal input, and, the user is by the device type icon of top various images, can know the signal source equipment that each road input port is connect, after signal source equipment increase or change that the user connects, the user can be provided with interface change icon, specifically:

After signal source equipment increase or change that the user connect, this road corresponding equipment type icon is changed into new signal source equipment type icon, at this moment, the user can press the operating key (as: " setup " key on the remote controller) on remote controller or the audiovideo switcher, entry port is provided with (" setup ") interface, at this moment, the user can by on the remote controller " on " or the D score key change the device type icon, be provided with by keeping behind " Enter " key.This audiovideo switcher has been stored multiple signal source equipment type icon in advance, has contained the employed AV signal source equipment of present family basically, after the user configures according to connection, just can see current available signal source device on TV.

When the user finds available signal is arranged, can choose by " left side " on the remote controller or " right side " key, after the affirmation of " Enter " key, audiovideo switcher is just exported to TV to user-selected signal by commutation circuit, if wanting to return main interface, the user checks the available signal source, can be by " Menu " key on the remote controller, audiovideo switcher is just given TV the detected signal source status signal of CPU, the state that shows multipath signal source on TV, select interface, user can select the signal source that to watch in signal source.

The inner changeover program of CPU as shown in Figure 3, comprises read port signal source equipment record in this audiovideo switcher; Whether detection port has the signal input in real time; According to described record and detection signal source output equipment menu image vision signal: grey signal source device icon representation does not have the signal input, and green expression has; Wait for that the user selects and select to carry out audio frequency and video and switch or withdraw from according to the user.

At last, in those of ordinary skills understood scope, in claim scope of the present invention, various variations all belonged to protection scope of the present invention.

Claims

1. A kind of audio-video switching method is characterized in that, adopts visual screen menu, specifically comprises:

1.1) Define and record the type of signal source device (1) connected to each port through user settings;

1.2) Through the signal detection of each port, identify the available signal source equipment with signal input;

1.3) According to the record and detection, display the signal source device menu on the screen and switch the signal source according to the user's selection.

2. The audio-video switching method according to claim 1, wherein the signal source device menu includes icons of signal source devices connected to each port and signs for identifying the signal status of the signal source device.

3. The audio-video switching method according to claim 2, wherein the signal status indication of the signal source device includes color or text.

4. The audio-video switching method according to claim 1, wherein the signal source devices displayed in the signal source device menu only include available signal source device icons.

5. The audio-video switching method according to claim 1, further comprising redefining and recording or updating the type of the corresponding port-connected signal source device when adding or replacing the port-connected signal source device.

6. The audio-video switching method according to claim 1, wherein the record includes the type code of the signal source device, and when there is the same type of signal source device, it also includes the device number of this type.

7. An audio and video switching system, including a signal source device, is characterized in that it also includes:

The audio-video switcher is connected between the signal source equipment (1) and the audio-video output device, including a definable recording port connected to the signal source equipment type, a central control circuit with video output and a signal detection device connected thereto for detecting port signals A circuit and an audio and video switching circuit for accepting and executing screen menu switching commands, the ports are more than one and connected to the signal source equipment one by one;

The audio and video output device is used for outputting a signal source device menu according to the recording and detection.

8. An audio-video switcher, which is connected between the signal source equipment (1) and the audio-video output device, is characterized in that it includes a central control circuit that can define a recording port to connect to the signal source equipment type, a video output, and its connection A signal detection circuit for detecting port signals and an audio and video switching circuit for accepting and executing screen menu switching commands. There are more than one ports connected to the signal source devices one by one.

9. according to the described audio-video switcher of claim 8, it is characterized in that, described port is analog and or digital port, and this switcher also comprises the signal conversion circuit between part or all ports and output end, and described output end Connect with the audio and video output device.

10. The audio-video switcher according to claim 9, wherein the port includes an AV port, the output end is an HDMI output interface, and the signal conversion circuit includes a port connected in turn between the AV port and the HDMI output interface. Between the analog-to-digital conversion unit and the HDMI encoder, the analog-to-digital conversion unit includes an audio analog-to-digital converter and a video analog-to-digital converter connected in parallel.